Hydrocarbon-engine



(No Model.)

` A. S. STETSON.

HYDROGARBON ENGINE. No. 267,946. Patented Nov. 21., 1882.

I I I I N. PETERS. PhamLilhugnpher, whingfon. U. C.

STATES AMOS S. STETSON, OF SOUTH ABINGTON, MASSACHUSETTS.

HYDROCARBON-ENGINE.

SPECIFICATION forming part of Letters Patent No. 267,946, dated November d Application filed August 28, 1882. (No model.)

My invention relates to the lubrication and cooling of the cylinder and piston, and to the utilizing for such lubrication of a certain substance resulting from the combustion of petroleum or its products, which has hitherto, by reason of the continuous and excessive heat in the cylinder, accumulated therein in the form of a charred scale or ash, preventing the perfect Working of the parts and necessitating frequent stops for cleaning. Formerly this residue of combustion would adhere to the sides of the cylinder and on the piston, and by reason of the continuous heat bake into a scale so hard that it could only be removed by a chisel or file, and this trouble could not be obviated by addinglubricant from without, which rather increased the difculty; but this hitherto injurious residue my invention converts by condensation into a superior lubricant, and a hydrocarbon-engine employing my combination furnishes its own lubricant at every stroke of the piston. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a longitudinal section of a horizontal cylinder and piston embodying a portion of Iny invention. Fig. 2 is a longitudinal section of the same at right angles to Fig. 1, and showing also the flexible tube forming part of the combination which I desire to secure by Letters Patent; `and Fig. 3 is a section ofthe piston-head, showing the manner ofthe water-circulation through the same.

Similarletters refer to similar parts throughout the several views.

A A are the longitudinal sides ofthe cylinder, which, for reasons i hereinafter more fully set forth, is preferably of a length nearly twice that of the working stroke of the piston.

B B is the working cylinder head, or firehead, (between'which and F theimpelling-fluid is introduced.).

K is the cross-head.

H is the water-jacketinclosing the cylinder.

G is the water-head.

F is the piston-head.

D is a hollow rod through which the water is conducted to the piston-head.

E is the hollow rod by which water is conducted from the piston-head.

L L is a flexible tube carrying the water from the discharging-rod of the piston into the water-jacket.

My invention having no relation to the method of driving the piston, no supply or exhaust mechanism is shown.

The working of my invention is as follows: Water is forced by any suitable means through the hollow piston-rod D, whence, following a course indicated in Fig. 3, it passes through the cylinder-head F, through the hollow piston-rod E, thence through a flexible tube, L, into the cylinder-head B, thence through the water-jacketH of the cylinder into the waterhead C, and thence to waste.

By making the cylinder of a length equal to, say, twicethat of the working stroke of the piston, the half of the cylinder next the waterhead `(l is kept perpetually cool, and by extending the surface ofthe piston-head by the trunk G a larger area is presented to the inuence of the cool end of the cylinder. The result is that the piston-head is maintained sufficiently cool, so that the products of combustion in the cylinder, which in continued heat would, as before described, become a scale or ash, are by the cooled piston, on its returnstroke, condensed into a superior lubricant, and the piston and cylinder, instead of clogging, become selilubricating.

I am aware that hollow piston-rods, hollow pistons,` flexible tubes for supplying water to the same, and water-jackets have been heretofore known and used,and in various combinations.

WhatI claim, and desire to secure by Letters Patent, is-

In a hydrocarbon motor, 'a cylinder prolonged beyond the Working stroke of the pisand unheated portion of such cylinder, and a v ton Vsuiciently to prevent the combustion Water-circulation, substantially as shown and against; the Working-face of such pistou from described.

directly heating that portion of the cylinder d AMOS S. STETSON. 5 beyond such working stroke,' in combination Witnesses:

with a trunlrpiston so extended as to present UHAS. H. SWAN,

:L designedly large surface to such prolonged WARREN A. REED. 

